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Fixed sprite-sprite priorities and fixed a sprite sticking bug on game over screen in Fire Barrel [Angelo Salese, David Haywood]

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This commit is contained in:
Angelo Salese 2010-12-17 19:51:02 +00:00
parent d5135cead6
commit 1e67892a82
1 changed files with 28 additions and 19 deletions
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47
src/mame/video/m107.c
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@ -54,6 +54,7 @@ static UINT16 *m107_spriteram;
UINT16 *m107_vram_data;
UINT16 m107_raster_irq_position;
UINT8 m107_spritesystem;
UINT8 m107_sprite_display;
/*****************************************************************************/
@ -162,17 +163,16 @@ VIDEO_START( m107 )
/*****************************************************************************/
static void draw_sprites(running_machine *machine, bitmap_t *bitmap, const rectangle *cliprect, int pri)
static void draw_sprites(running_machine *machine, bitmap_t *bitmap, const rectangle *cliprect)
{
int offs;
UINT8 *rom = memory_region(machine, "user1");
for (offs = 0x800-4;offs >= 0;offs -= 4)
for (offs = 0;offs < 0x800;offs += 4)
{
int x,y,sprite,colour,fx,fy,y_multi,i,s_ptr;
int x,y,sprite,colour,fx,fy,y_multi,i,s_ptr,pri_mask;
if (((m107_spriteram[offs+2]&0x80)==0x80) && pri==0) continue;
if (((m107_spriteram[offs+2]&0x80)==0x00) && pri==1) continue;
pri_mask = (!(m107_spriteram[offs+2]&0x80)) ? 2 : 0;
y=m107_spriteram[offs+0];
x=m107_spriteram[offs+3];
@ -200,18 +200,20 @@ static void draw_sprites(running_machine *machine, bitmap_t *bitmap, const recta
for (i=0; i<y_multi; i++)
{
drawgfx_transpen(bitmap,cliprect,machine->gfx[1],
pdrawgfx_transpen(bitmap,cliprect,machine->gfx[1],
sprite + s_ptr,
colour,
fx,fy,
x,y-i*16,0);
x,y-i*16,
machine->priority_bitmap,pri_mask,0);
/* wrap-around y */
drawgfx_transpen(bitmap,cliprect,machine->gfx[1],
pdrawgfx_transpen(bitmap,cliprect,machine->gfx[1],
sprite + s_ptr,
colour,
fx,fy,
x,(y-i*16) - 0x200,0);
x,(y-i*16) - 0x200,
machine->priority_bitmap,pri_mask,0);
if (fy) s_ptr++; else s_ptr--;
}
@ -255,18 +257,20 @@ static void draw_sprites(running_machine *machine, bitmap_t *bitmap, const recta
if (!ffy) sprite+=y_multi-1;
for (i=0; i<y_multi; i++)
{
drawgfx_transpen(bitmap,cliprect,machine->gfx[1],
pdrawgfx_transpen(bitmap,cliprect,machine->gfx[1],
sprite+(ffy?i:-i),
colour,
ffx,ffy,
(x+xdisp)&0x1ff,(y-ydisp-16*i)&0x1ff,0);
(x+xdisp)&0x1ff,(y-ydisp-16*i)&0x1ff,
machine->priority_bitmap,pri_mask,0);
/* wrap-around y */
drawgfx_transpen(bitmap,cliprect,machine->gfx[1],
pdrawgfx_transpen(bitmap,cliprect,machine->gfx[1],
sprite+(ffy?i:-i),
colour,
ffx,ffy,
(x+xdisp)&0x1ff,((y-ydisp-16*i)&0x1ff)-0x200,0);
(x+xdisp)&0x1ff,((y-ydisp-16*i)&0x1ff)-0x200,
machine->priority_bitmap,pri_mask,0);
}
if (rom[rom_offs+1]&0x80) break; /* end of block */
@ -339,16 +343,18 @@ static void m107_tilemap_draw(running_machine *machine, bitmap_t *bitmap, const
tilemap_set_scrollx(pf_layer[laynum].tmap,0, m107_control[1 + 2 * laynum]);
tilemap_set_scrolly(pf_layer[laynum].tmap,0, (m107_control[0 + 2 * laynum] + scrolldata[line]));
tilemap_draw(bitmap, &clip, pf_layer[laynum].tmap, category | opaque, 0);
tilemap_draw(bitmap, &clip, pf_layer[laynum].tmap, category | opaque, category);
}
}
else
tilemap_draw(bitmap, cliprect, pf_layer[laynum].tmap, category | opaque, 0);
tilemap_draw(bitmap, cliprect, pf_layer[laynum].tmap, category | opaque, category);
}
static void m107_screenrefresh(running_machine *machine, bitmap_t *bitmap, const rectangle *cliprect)
{
bitmap_fill(machine->priority_bitmap, cliprect, 0);
if ((~m107_control[0x0b] >> 7) & 1)
{
m107_tilemap_draw(machine, bitmap, cliprect, 3, 0,0);
@ -361,14 +367,12 @@ static void m107_screenrefresh(running_machine *machine, bitmap_t *bitmap, const
m107_tilemap_draw(machine, bitmap, cliprect, 2, 0,(((m107_control[0x0b] >> 7) & 1) ? TILEMAP_DRAW_OPAQUE : 0));
m107_tilemap_draw(machine, bitmap, cliprect, 1, 0,0);
m107_tilemap_draw(machine, bitmap, cliprect, 0, 0,0);
draw_sprites(machine, bitmap, cliprect, 0);
m107_tilemap_draw(machine, bitmap, cliprect, 2, 1,0);
m107_tilemap_draw(machine, bitmap, cliprect, 1, 1,0);
m107_tilemap_draw(machine, bitmap, cliprect, 0, 1,0);
draw_sprites(machine, bitmap, cliprect, 1);
if(m107_sprite_display)
draw_sprites(machine, bitmap, cliprect);
/* This hardware probably has more priority values - but I haven't found
any used yet */
@ -379,7 +383,12 @@ static void m107_screenrefresh(running_machine *machine, bitmap_t *bitmap, const
WRITE16_HANDLER( m107_spritebuffer_w )
{
if (ACCESSING_BITS_0_7) {
/*
TODO: this register looks a lot more complex than how the game uses it. All of them seems to test various bit combinations during POST.
*/
// logerror("%04x: buffered spriteram\n",cpu_get_pc(space->cpu));
m107_sprite_display = (!(data & 0x1000));
memcpy(m107_spriteram,space->machine->generic.spriteram.u16,0x1000);
}
}